Vanadium/phosphorus oxide oxidation catalyst
AssigneeThe Trustees of Princeton University
InventorsJay B. Benziger, Vadim Guliants, Sankaran Sundaresan
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Abstract
A vanadium/phosphorus oxide oxidation catalyst suitable for catalytic oxidation of C.sub.4 feed stock in the preparation of maleic anhydride is formed by calcining an intercalation complex of the formula VOHPO.sub.4 .multidot.0.5H.sub.2 O.multidot.({C.sub.n H.sub.2n+1 }--X).sub.z in which n has a value of from 0 to 20, z has a value of from about 1.5 to about 1.9; and X is an oxygen- or nitrogen-containing functional group operable to form hydrogen bonds with the structural P--OH and water groups of the complex.
Claims10
An intercalated vanadium complex which upon being calcined forms a vanadium/phosphorus oxide oxidation catalyst, said complex having the formula:
- VOHPO.sub.4 .multidot.0.5H.sub.2 O.multidot.({C.sub.n H.sub.2n+1 }--X).sub.z
- in which X is an oxygen- or nitrogen-containing functional group operable to form hydrogen bonds with the P--OH and water groups of the complex;
- n has a value of from 0 to 20 when X is a nitrogen-containing functional group or a value of from 1 to 20 when
- X is an oxygen-containing functional group;
- and
- z has a value of from about 1.5 to about 1.9.
Dependencies are inferred from the claim text.